Microsoft Defender SmartScreen protects against phishing or malware websites and applications, and the downloading of potentially malicious files. It applies to Windows 10, Windows 11 and Microsoft Edge. Click to learn more details about the installation errors. Follow these steps to make sure you trust PDF Reader Pro before you open it. 1. Select "More actions" right of the warning.
2. Click "Keep".
3. "Show more" to expand.
4. Then choose the first option "Keep anyway". Now you can Open file and follow the setup wizard.
Note: If browser shows Windows protected your PC. You should click "More info" -> "Run anyway".
Please click "Yes" when the pop-up window "Do you want to allow this app from an unknown publisher to make changes to your device?" appears during installation.